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RN1402S,LF Equivalent & Substitute Parts Reference
Part Overview
RN1402S,LF is a pre-biased NPN bipolar junction transistor (BJT) produced by Toshiba Semiconductor and Storage, categorized under Transistors, Bipolar (BJT). It is designed for surface mount applications in the S-Mini (TO-236-3, SC-59, SOT-23-3) package. This part features a pre-biased resistor configuration with 10 kOhms for both base and emitter-base resistors, supports a maximum collector current of 100 mA, and offers a voltage breakdown of 50 V. The part number RN1402S,LF holds an obsolete product status, which necessitates identifying direct equivalent or substitute models to ensure continuity in engineering designs requiring these precise specifications.
Substiute Parts
Key Parameters
| Parameter | RN1402S,LF |
|---|---|
| Manufacturer | Toshiba Semiconductor and Storage |
| Category | Transistors, Bipolar (BJT) |
| Transistor Type | NPN - Pre-Biased |
| Current - Collector (Ic) (Max) | 100 mA |
| Voltage - Collector Emitter Breakdown (Max) | 50 V |
| Resistor - Base (R1) | 10 kOhms |
| Resistor - Emitter Base (R2) | 10 kOhms |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 50 @ 10mA, 5V |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 250µA, 5mA |
| Current - Collector Cutoff (Max) | 500nA |
| Frequency - Transition | 250 MHz |
| Power - Max | 200 mW |
| Mounting Type | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | S-Mini |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitutes for the RN1402S,LF are identified strictly by matching all critical electrical and mechanical parameters relevant to pre-biased NPN BJT operation:
- Transistor type: NPN - Pre-Biased
- Maximum collector current: 100 mA
- Maximum collector-emitter voltage: 50 V
- Built-in resistors: 10 kOhms (base), 10 kOhms (emitter-base)
- Package and mounting: Surface Mount, TO-236-3, SC-59, SOT-23-3 (S-Mini)
- Electrical characteristics: DC gain, saturation voltage, cutoff current, transition frequency, max power
- Moisture Sensitivity Level (MSL)
Only parts matching these parameters are listed as substitutes.
Parameter Comparison
| Parameter | RN1402S,LF | RN1402,LF |
|---|---|---|
| Manufacturer | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage |
| Category | Transistors, Bipolar (BJT) | Transistors, Bipolar (BJT) |
| Transistor Type | NPN - Pre-Biased | NPN - Pre-Biased |
| Current - Collector (Ic) (Max) | 100 mA | 100 mA |
| Voltage - Collector Emitter Breakdown (Max) | 50 V | 50 V |
| Resistor - Base (R1) | 10 kOhms | 10 kOhms |
| Resistor - Emitter Base (R2) | 10 kOhms | 10 kOhms |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 50 @ 10mA, 5V | 50 @ 10mA, 5V |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 250µA, 5mA | 300mV @ 250µA, 5mA |
| Current - Collector Cutoff (Max) | 500nA | 500nA |
| Frequency - Transition | 250 MHz | 250 MHz |
| Power - Max | 200 mW | 200 mW |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | S-Mini | S-Mini |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
Selection of a substitute should prioritize RN1402,LF due to its identical electrical, mechanical, and packaging specifications compared to RN1402S,LF. RN1402,LF is classified as active status, with RoHS3 and REACH compliance, and features the same S-Mini surface mount package. Product and environmental compliance parameters are matched as provided.
Frequently Asked Questions (FAQ)
Q1: What parameters must match for a RN1402S,LF substitute?
A1: Key parameters are transistor type (NPN - Pre-Biased), maximum collector current (100 mA), voltage rating (50 V), base and emitter-base resistors (10 kOhms each), package (TO-236-3, SC-59, SOT-23-3, S-Mini), and surface mount compatibility.
Q2: Is RN1402,LF functionally identical to RN1402S,LF?
A2: Based on the provided parameters, RN1402,LF is functionally identical to RN1402S,LF, with matching electrical ratings, integrated resistor values, and packaging.
Q3: Are there any differences in compliance or status between the parts?
A3: RN1402S,LF is obsolete, whereas RN1402,LF is active and RoHS3 compliant, with REACH unaffected status and MSL 1 (Unlimited).
Q4: Do mounting methods or package types differ?
A4: Both parts are specified as S-Mini, compatible with TO-236-3, SC-59, SOT-23-3 surface mount footprints.
Q5: Which substitute part numbers are directly listed for RN1402S,LF?
A5: RN1402,LF is the directly listed substitute part number with matching specifications.
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